Refrigerating device



Feb. 26, 1929. 1,703,299

L.. G. coPEMAN REFRI GERAT-ING DEVICE Filed oct. 14, 1926' mkxxmmw afw-@Hamm Jwovmtow Patented F eh. 26, `1929.

UNITED STATES 1,703,299 PATENT ioFFlcE.

LLOYD Gr. COPEMAN, OF FLINT, MICHIGAN, ASSIGNOR '10 COllillltIAlh'l'vLABORATORIES COMPANY, 0F FLINT, MICHIGAN, A CORPORATION OF MICHIGAN.

REFRIGERATING DEVICE.

This invention relates to -refrigerating devices and is concerned moreespecially with power or iceless refrigerators.

Refrigerators of the type mentioned are rapidly coming into use for bothdomestic and commercial purposes. In .the home, the preparation ofcertain foodstuffs, such as ices or ice cream, requires means forchilling or freezing. In the past when ice was used more extensively,the amount of ice ordinarily on hand was sufiicient for this purpose;however, when the user or owner of a. power refrigerator desires toprepare such foodstuffs he is confronted with the lack of means forproviding chills ing or freezing.l Many power refrigerators areconstructed so as to produce ice. 1`he capacity of domesticrefrigerators is limited because it is not economical nor desirable tohave comparatively large and expensive machines for domestic purposes,and the ice produced is not Ain suiiicient quantities for thepreparation of such foodstuffs.

The aim of this invention is the provision of means for the preparationof foodstuffs which require chilling or freezing. Accordingly, a powerrefrigerator is provided with an auxiliary pipe and valve -system whichmay be connected to an independent or separate freezing device. Thisdevice, for example, may be in the form of a container and may belocated at some point remote from the refrigerator. For instance, therefrigerator is ordinarily in the kitchen of the household, and thefreezing device may be located in the basement of the house where icecream or ices may be advantageously prepared Conduits of adequateconstruction connect the refrigerator with the fiiezing device, and thearrangement is such that the, freezing device may bc operativelyconnected to or disconnected from the refrigerator at will. i

According to the invention, the arrangement is suchthat when'theauxiliary chill.- ing device is not in use itis isolated from therefrigerator in such a wayfa's to in no way effect the usual operationofthe refrgeratOI'. When, however,Y the chilling device is to beoperated it` may be readily connected to the refrigerator in such-a waythat the refrigerator mechanism is utilized for the purpose. E

The invention is somewhat diagram- A matically shown in the accompanyingdrawing wherein a power refrigerator lis shown, parts being cut awayshowing a p01'- tion of the refrigerating mechai -sm, and showing themanner in which a refiigerator is connected to the .auxiliary chillingor freezing device.

Referring to the drawing, a refrigerator cabinet 1 may be composed of anouter casing of wood having an inner structure 2 which may be ofartificial stone such as Oxy-chloride cement. Interposed between theouter and inner layers may be a layer 3 of ymore or less insulatingqualities such as a cork mixture. Within the refrigerator is shown, inpart, refrigerating mechanism of the `Hooded type.l The mechanism shownincludes the boiler 4 having coils 5. The liquid refrigerant is suppliedto-the boiler 4 through the means of a compressor and condenseroperatedn by suitable power means such as an electric motor, all ofwhich are well understood and not shown. Within the loops, or coils 5,are drawers 6 which are used for the making of ice. rIhe specific formof cabinet and refrigerator, which corresponds to the structure thus fardescribed is not important, since the invention contemplates 'the' useof refrigerator cabinets or refrigerating mechanism vof various forms ortypes.

Connected into the boiler 4 are pipes 10 and 11, and each pipe isprovided with a valve 12. The pipes 10 and 11 extend out through thewall of the refrigerator cabinet and then may be directed to any`desirable remote point, as for instance, in the basement of the home.

The separate freezing orchilling device is indicated at 15, and it .ispreferably formed of an outside layer 16 which may be of wood or metal,asecond layer 17 preferably of a cork mixture, and an interior layer 18of Oxy-chloride cement. ylfhis cement is preferably of a special formwhich I have disclosed in some of my prior applications and whichcontainsv magnesium oxide and` a suitable aggregate such/as ground'lintlor sand, and to which is added suficientmagnesiurri chloride insolution. at 26 Baume to makea lmix of desired consistency. Embeddedinthe cement is the coil 19 which is in' communication with the l I 604Y .device `inconnectio with othertypes ofreany one of the coils 5. rIhepipes and 11. A suitable cover 20 may be provided for the device, and acontainer 21, suitable for holding the foodstu to be prepared, is shownwithin the chillingv de- Y the pipe 10 to the level of the liquid intheboiler. The operation of the flooded type of refrigerator is, of course,well known since the liquid r'efrigerant boils within the boiler andcoil, and in doing so, extracts the heat from surrounding territory. J

In the usual operation of the refrigerator the valves 12 will be closed.These valves are opened when the cooling device 15 is to be utilized,thus connecting the pipes 10 and 11 and the coil 19 with the boiler, andas a result, the coil 19 draws heat from its surroundings. The foodstuffwhich is to be prepared is placed within the container 21 which is inturn placed within the cooling device, and it is chilled or frozen tothe desired degree. Upon completion of the operation the v lves 12 areclosed. As the 'refrigerant used boils at a very low temperature,regardless of the particular refrigerant, a rather high pressure mayexist in the pipes 11, 12 and 19 when the valves are closed. For thepurpose of compensating, in part, for this -pressure an expansion globe22 may be provided in communication with the pipe 10. This globe ispositioned above the level of the liquid refrigerant within the tank 4so that the gases only coming from the refrigerant enter the globe. Alsoa safety valve 23 may be prvided in order to` prevent-breakage ofconduits or the coil 19, b ut ordinarily safety valve willnnot bebrought into play as the conduits and coil will be of suicient :strengthto overcome any ly encountered.

In the use of the apparatus, vthe chilling apparatus will be positionedat some desirable remote point, andthe conduits 11 and pressureordinari- 12, and the expansion globe 22, for that e pv'enthe chillingdevice in thev form shown,

I`is"`advantageously used with a refrigerating system'of the Hoodedtype, s although it is within the invention toprovide a chillingfrigerating mechanism, as for'example, the expansion coil type. f p

Iclaim: 1.*The combination `with a refrigerator having av powerrefrigerating mechanism, of a separate chilling device, a coiledconduitv in the device, pipes extending through the wall oftherefrigerator and connecting the refrigerating mechanism with the coiledconduit, valves in the pipes whereby the sepg `arate chilling device maybe connected to or disconnected from the refrigerating mechanism, and asafety valve in one of the pipes positioned to ybe closed off with theseparate chilli-ng ydevice when the valves are c losed. Y

l2."I`he combination with a refrigerator y having a power refrigeratingmechanism, of a separate chilling device, a coiled conduit in thedevice, pipes extending through the wall of the refrigerator andconnecting. the refrigerating mechanism with the coiled conduit, valvesin Vthe pipes whereby the separate chilling device may be connected toor disconnected from the refrigerating mechanism, and an expansion globein one of the pipes which is closed 0E together with the separatechilling device when the valves are closed.

3. yThe combination with a refrigerator having a power refrigeratingmechanism which includes a boiler for containing'liquid refrigerant, `aseparate chilling device having a coiled conduit, ipes `connecting thecoil in the chilling 'device and the boiler of the refrigeratingmechanism so that the reth` thl, which includes a refrigerating cabinetequipped `with a refrigerating mechanism \`having a container forrefrigerant, .of an auxiliary and independent chilling device positionedremote from the refrigerator` cabinet, refrigerantvcoils in thisauxiliary 'chilling device, conduits connecting the coils in4 theauxilia chilling device with the refrigerant container of therefrigerating mechanism in the cabinet, and valve means in the 4conduitswhich are disposed in close' proxi-mity to the refrigerating mechanismin the I cabinet, said valve means beingl operable to close off theconduits together with the coils r in the auxiliary chillng device topermit of normal independent operation of the refrigerator and beingoperable to open the conduits to effect opration of` the auxiliarychilling device when elected.

In testimony whereof I affix my signature.

LLOYDy e. coPEMAN.

